Elite ring and pinion sets use the latest engineering and manufacturing technology to produce OEM quality gears at a competitive price. All Elite gears are machined from premium 8620 alloy steel, then heat treated to the strictest standards for maximum strength and durability. Elite gears then go through an extensive lapping process to assure easy setup, excellent contact patterns, and quiet operation. Premium master install kit uses only the highest quality components including Koyo brand bearings. Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush collar (if applicable), threadlock, marking compound, brush, and gasket or RTV silicone.